Submission #289319

#	Time	Username	Problem	Language	Result	Execution time	Memory
289319		amoo_safar	Roller Coaster Railroad (IOI16_railroad)	C++17	34 / 100	77 ms	8704 KiB

railroad

#include "railroad.h"

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int N = 16;
ll dp[1 << N][N];

ll plan_roller_coaster(vector<int> s, vector<int> t){
	int n = (int) s.size();
	assert(n <= N);
	memset(dp, 31, sizeof dp);
	int n2 = 1 << n;
	for(int i = 0; i < n; i++) dp[1 << i][i] = 0;
	
	for(int i = 1; i < n2; i++){
		for(int la = 0; la < n; la ++){
			if(i >> la & 1 == 0) continue;
			for(int nx = 0; nx < n; nx ++){
				if(i >> nx & 1) continue;
				dp[i | (1 << nx)][nx] = min(dp[i | (1 << nx)][nx], dp[i][la] + max(0, t[la] - s[nx]));
			}
		}
	}
	return *min_element(dp[n2 - 1], dp[n2 - 1] + n);
}

Compilation message (stderr)

railroad.cpp: In function 'll plan_roller_coaster(std::vector<int>, std::vector<int>)':
railroad.cpp:21:19: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   21 |    if(i >> la & 1 == 0) continue;
      |                 ~~^~~~

• Subtask 1: 11 / 11
• Subtask 2: 23 / 23
• Subtask 3: 0 / 30
• Subtask 4: 0 / 36